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GABA Agonists and Antagonists for Hematopoietic Stem Cell and Megakaryocyte Progenitor Differentiation

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Published March 31st, 2026
Detected March 31st, 2026
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Summary

The USPTO granted Patent US12589114B2 to Stanford University covering methods for using GABA agonists and antagonists to affect differentiation of hematopoietic stem cells and megakaryocyte progenitors. The patent claims 7 compositions and methods targeting GABRR1 expression to either inhibit or promote megakaryocyte generation and platelet production. This patent issuance provides Stanford exclusive rights to these therapeutic approaches.

What changed

The USPTO issued US Patent 12589114B2 to the Board of Trustees of the Leland Stanford Junior University covering GABRR1-targeted methods for regulating hematopoiesis. The patent discloses that GABRR1 expressed on hematopoietic stem cells and megakaryocyte progenitors can be manipulated using agonists to promote platelet production or antagonists to inhibit platelet generation. Seven claims protect compositions and methods relating to GABAA receptor subunit GABRR1 manipulation for therapeutic applications.

For companies developing cell therapy products, blood disorders treatments, or platelet regeneration therapies, this patent may affect freedom-to-operate considerations. Researchers should review the patent claims before conducting commercial research involving GABA receptor modulation in hematopoiesis. No immediate compliance actions are required, but R&D teams should assess potential licensing needs if working in this technological space.

Source document (simplified)

← USPTO Patent Grants

GABA agonists and antagonists affect differentiation of hematopoietic stem cells and megakaryocyte progenitors

Grant US12589114B2 Kind: B2 Mar 31, 2026

Assignee

The Board of Trustees of the Leland Stanford Junior University

Inventors

Fangfang Zhu, Irving L. Weissman

Abstract

GABRR1 is shown to be expressed on subsets of hematopoietic stem cells (HSCs) and megakaryocyte progenitors (MkPs). Inhibition of GABRR1 inhibits MkP differentiation and reduction of platelet numbers in blood. Overexpression of GABRR1 or treatment with agonists significantly promotes MkP generation and growth of megakaryocytes.

CPC Classifications

A61K 35/18 A61K 35/19 C07K 14/475 C07K 14/705 C12N 2310/20 C12N 15/1138 C12N 15/907 C12N 2506/11 C12N 2740/16043

Filing Date

2020-05-11

Application No.

17610410

Claims

7

View original document →

Source

Analysis generated by AI. Source diff and links are from the original.

Classification

Agency
USPTO
Published
March 31st, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
US12589114B2

Who this affects

Applies to
Pharmaceutical companies Healthcare providers Medical device makers
Industry sector
3254.1 Biotechnology 3254 Pharmaceutical Manufacturing 6211 Healthcare Providers
Activity scope
Biotechnology Research Pharmaceutical Development Cell Therapy Manufacturing
Geographic scope
United States US

Taxonomy

Primary area
Intellectual Property
Operational domain
Legal
Topics
Biotechnology Pharmaceuticals Healthcare

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